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Power Relay Assembly

The power relay assembly (PRA) is a component that discharges or recharges a high-voltage battery by supplying or blocking power. Mounted within the High-Voltage Battery System Assembly (BSA), it electrically connects the battery and inverter. The parts applied to the PRA include main relay, precharge relay, resistance, current sensor, temperature sensor, and bus bar. The PRA diagnoses battery performance by monitoring the current and temperature. Created by the in-house development activities that started 2021, the PRA will be installed in Hyundai-Kia Motors' EV, HEV, and FCEV vehicles. We are striving to make price-competitive PRA products through our proprietary technology development capabilities.

Features
An optimal package satisfying various requirements of high voltage systems
Preliminary verification of design suitability through various analytics techniques (electromagnetic field/thermal fluid/vibration, etc.)
Providing integrated solutions through in-house development of electronics (current sensor, pre-charge relay, etc.)
Reduced material costs through busbar optimization design
Heat dissipation design to deal with internal heat
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